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基于汉明重分组的动态帧时隙ALOHA防碰撞算法 被引量:5
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作者 杜宗印 章国安 +1 位作者 袁红林 杨振 《计算机应用研究》 CSCD 北大核心 2015年第5期1464-1466,1470,共4页
针对射频识别(RFID)系统中标签较多时动态帧时隙ALOHA算法识别效率快速下降的问题,在动态帧时隙ALOHA算法的基础上,利用标签ID前M位的汉明重量对阅读器范围内标签进行分组,提出了一种基于汉明重分组的动态帧时隙ALOHA算法(LGDFSA),并利... 针对射频识别(RFID)系统中标签较多时动态帧时隙ALOHA算法识别效率快速下降的问题,在动态帧时隙ALOHA算法的基础上,利用标签ID前M位的汉明重量对阅读器范围内标签进行分组,提出了一种基于汉明重分组的动态帧时隙ALOHA算法(LGDFSA),并利用MATLAB对它进行了仿真模拟。仿真结果表明,LGDFSA算法与动态帧时隙ALOHA算法相比,当标签数较多时,系统吞吐量提高,并趋于稳定,总操作数有所减少,系统总体效率提高。 展开更多
关键词 射频识别 ALOHA算法 汉明重分组 吞吐量 总操作数
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Optimization of Operational Parameters in a Three Phase AC / DC Reactive Power Compensator 被引量:1
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作者 H. Feshki Farahani M. Sabaghi +1 位作者 A. Kazemi H.A. Shayanfar 《Journal of Energy and Power Engineering》 2010年第3期52-57,共6页
AC / DC converter is a kind of devices applicable to reactive power compensation. Three parameters including losses, Total Harmonic Distortion (THD) and compensation capacity have important role in designing procedu... AC / DC converter is a kind of devices applicable to reactive power compensation. Three parameters including losses, Total Harmonic Distortion (THD) and compensation capacity have important role in designing procedure that these parameters are affected by the firing angle. Consideration trade of between these parameters can cause be selected suitable firing angle for optimal working of the compensator. In this paper is defined an objective function which includes the above parameters. This objective function is optimized through appropriate weighting factor for any parameters and the optimal firing angle will be obtained. So, the mention parameters can be selected optimally. 展开更多
关键词 Optimal firing angle compensator capacity compensator loss harmonic reduction
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